john at uc berkeley says the smaller, the more limit the effects of any contamination. >>> organic creams, messages and flowers all for one teacher. how the community is handling his death. >>> tomorrow could be a make or break day in the reyes for president. the count down and the key topics expected to coffer. >>> another round of near-record temperatures faced the bay area today. a cooling trend is coming our way. i will show you those numbers coming up. . >>> video now of a spectacular site over san francisco. news chopper 2 was there just minutes ago as u.s. navy's blue angels flew into town in formation for this year's fleet week. precision flight demonstration team will be overhead thursday and friday to practice for their performances saturday and sunday. and go to ktvu.com for more incredible video of those blue angels. just look for the video player in the middle of the home page. >>> and amtrak officials say the crossing gate was down when a big rig hit the passenger train in a central valley. that accident caused the plain to de rail yesterday injuring about 40 people. today i